MirOS Manual: isinff(3), isnanf(3)

ISINFF(3)                  BSD Programmer's Manual                   ISINFF(3)

NAME

     isinff, isnanf - test for infinity or not-a-number

LIBRARY

     libm

SYNOPSIS

     #include <math.h>

     int
     isinff(float);

     int
     isnanf(float);

DESCRIPTION

     The isinff() function returns 1 if the number is "Infinity", otherwise 0.

     The isnanf() function returns 1 if the number is "not-a-number", other-
     wise 0.

SEE ALSO

     isinf(3), isnan(3), math(3)

     IEEE Standard for Binary Floating-Point Arithmetic, Std 754-1985, ANSI.

BUGS

     Neither the VAX nor the Tahoe floating point have distinguished values
     for either infinity or not-a-number. These routines always return 0 on
     those architectures.

MirOS BSD #10-current          August 16, 1999                               1

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